Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 26, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-11993
Entity Registrant Name	OPTION CARE HEALTH, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	05-0489664
Entity Address, Address Line One	3000 Lakeside Dr.
Entity Address, Address Line Two	Suite 300N,
Entity Address, City or Town	Bannockburn,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60015
City Area Code	312
Local Phone Number	940-2443
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Trading Symbol	OPCH
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		180,052,037
Entity Central Index Key	0001014739
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false